| 摘要 |
Two pairs of discs mounted on mutually inclined shafts each have concentric cutting edges on opposed faces, one pair of discs being mounted generally edge-to-edge in relation to the other pair. The discs are movable, so that the cutting edges of one pair form a cutting zone at one peripheral location while those of the other pair are spaced to form a gap, and vice versa. Stock to be cut is fed tangentially into the general area of these zones, its path of travel being moved radially outwardly of the discs forming a cutting zone and through the gap in the other pair of discs, this direction of movement then being reversed, after the disc positions have been reversed, and so on, thus enabling a series of cuts to be made.
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